Java Jar file SoftLink in Linux

Question

I have created a jar file , it reads from standard input and print them out to the standard output.

Below is how you can use the app:

cat /ephemeral/test/input | java -jar /ephemeral/test/Hello.jar >> /ephemeral/test/output

I am wondering is it possible to add my Hello.jar to be a Linux Command, let's say -hello-:

So next time I could just do something like:

hello /ephemeral/test/input /ephemeral/test/output

I am not that much familiar with Linux Soft Link and Java, so any help or information would be appricated!

UPDATE: thanks for reno's inspiring answer, I put the cat ... | .. >> .. into a shell script hello.sh. Now I can do something like:

./hello.sh /inputpath/input outputpath/output

(Note: you should not use $0, $0 is actually the name the file itself instead of input arguments)

Now, the last question is how could you access the shell script EVERYWHERE, like how you call basic shell cmds: ls..cat..echo..

I have read a tutorial described exactly what I want(reach to the end of the tutorial directly):

1. I did add the path of the directory where the hello.sh exists into the path variable.

2. I created a bin folder which is like mkdir /home/ubuntu/bin and put my shell script there. However, I still have problem do what the author described:

   hello input output (in my case)

Does anyone know what is going wrong here?

Answer 1

执行此操作的方法是编写包含必要的java -jar命令的shell脚本（通常为hello.sh ）。

Answer 2

you can write a shell script say test.sh and copy your code to test.sh

!/bin/bash

cat $0 | java -jar /ephemeral/test/Hello.jar >> $1

and execute the script by passing your input and output file name something like this:

test.sh /ephemeral/test/input /ephemeral/test/output